I already have a AE cs5 and I downloaded AE CS6 when Im going to install it.. its says erro and any files could not installed
Can I uninstall cs5 to complete installing AE CS6?
The one has nothing to do with the other. Different versions install independently. So whatever problems you have, are probably casued by something else. Anyway, you did not tell us anything about your computer, so this is slightly pointless. In order to help specifically, we'd need much more info. In the meantime feel free to uninstall everything, use the Creative Suite Cleaner Tool and try again....